3 * TI 3410/5052 USB Serial Driver
5 * Copyright (C) 2004 Texas Instruments
7 * This driver is based on the Linux io_ti driver, which is
8 * Copyright (C) 2000-2002 Inside Out Networks
9 * Copyright (C) 2001-2002 Greg Kroah-Hartman
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * For questions or problems with this driver, contact Texas Instruments
17 * technical support, or Al Borchers <alborchers@steinerpoint.com>, or
18 * Peter Berger <pberger@brimson.com>.
21 #include <linux/kernel.h>
22 #include <linux/errno.h>
23 #include <linux/firmware.h>
24 #include <linux/init.h>
25 #include <linux/slab.h>
26 #include <linux/tty.h>
27 #include <linux/tty_driver.h>
28 #include <linux/tty_flip.h>
29 #include <linux/module.h>
30 #include <linux/spinlock.h>
31 #include <linux/ioctl.h>
32 #include <linux/serial.h>
33 #include <linux/kfifo.h>
34 #include <linux/mutex.h>
35 #include <linux/uaccess.h>
36 #include <linux/usb.h>
37 #include <linux/usb/serial.h>
39 #include "ti_usb_3410_5052.h"
43 #define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
44 #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
46 #define TI_FIRMWARE_BUF_SIZE 16284
48 #define TI_WRITE_BUF_SIZE 1024
50 #define TI_TRANSFER_TIMEOUT 2
52 #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
54 /* supported setserial flags */
55 #define TI_SET_SERIAL_FLAGS 0
58 #define TI_READ_URB_RUNNING 0
59 #define TI_READ_URB_STOPPING 1
60 #define TI_READ_URB_STOPPED 2
62 #define TI_EXTRA_VID_PID_COUNT 5
71 __u8 tp_uart_mode
; /* 232 or 485 modes */
72 unsigned int tp_uart_base_addr
;
74 wait_queue_head_t tp_write_wait
;
75 struct ti_device
*tp_tdev
;
76 struct usb_serial_port
*tp_port
;
78 int tp_read_urb_state
;
79 int tp_write_urb_in_use
;
80 struct kfifo write_fifo
;
84 struct mutex td_open_close_lock
;
85 int td_open_port_count
;
86 struct usb_serial
*td_serial
;
92 /* Function Declarations */
94 static int ti_startup(struct usb_serial
*serial
);
95 static void ti_release(struct usb_serial
*serial
);
96 static int ti_port_probe(struct usb_serial_port
*port
);
97 static int ti_port_remove(struct usb_serial_port
*port
);
98 static int ti_open(struct tty_struct
*tty
, struct usb_serial_port
*port
);
99 static void ti_close(struct usb_serial_port
*port
);
100 static int ti_write(struct tty_struct
*tty
, struct usb_serial_port
*port
,
101 const unsigned char *data
, int count
);
102 static int ti_write_room(struct tty_struct
*tty
);
103 static int ti_chars_in_buffer(struct tty_struct
*tty
);
104 static bool ti_tx_empty(struct usb_serial_port
*port
);
105 static void ti_throttle(struct tty_struct
*tty
);
106 static void ti_unthrottle(struct tty_struct
*tty
);
107 static int ti_ioctl(struct tty_struct
*tty
,
108 unsigned int cmd
, unsigned long arg
);
109 static void ti_set_termios(struct tty_struct
*tty
,
110 struct usb_serial_port
*port
, struct ktermios
*old_termios
);
111 static int ti_tiocmget(struct tty_struct
*tty
);
112 static int ti_tiocmset(struct tty_struct
*tty
,
113 unsigned int set
, unsigned int clear
);
114 static void ti_break(struct tty_struct
*tty
, int break_state
);
115 static void ti_interrupt_callback(struct urb
*urb
);
116 static void ti_bulk_in_callback(struct urb
*urb
);
117 static void ti_bulk_out_callback(struct urb
*urb
);
119 static void ti_recv(struct usb_serial_port
*port
, unsigned char *data
,
121 static void ti_send(struct ti_port
*tport
);
122 static int ti_set_mcr(struct ti_port
*tport
, unsigned int mcr
);
123 static int ti_get_lsr(struct ti_port
*tport
, u8
*lsr
);
124 static int ti_get_serial_info(struct ti_port
*tport
,
125 struct serial_struct __user
*ret_arg
);
126 static int ti_set_serial_info(struct tty_struct
*tty
, struct ti_port
*tport
,
127 struct serial_struct __user
*new_arg
);
128 static void ti_handle_new_msr(struct ti_port
*tport
, __u8 msr
);
130 static void ti_stop_read(struct ti_port
*tport
, struct tty_struct
*tty
);
131 static int ti_restart_read(struct ti_port
*tport
, struct tty_struct
*tty
);
133 static int ti_command_out_sync(struct ti_device
*tdev
, __u8 command
,
134 __u16 moduleid
, __u16 value
, __u8
*data
, int size
);
135 static int ti_command_in_sync(struct ti_device
*tdev
, __u8 command
,
136 __u16 moduleid
, __u16 value
, __u8
*data
, int size
);
138 static int ti_write_byte(struct usb_serial_port
*port
, struct ti_device
*tdev
,
139 unsigned long addr
, __u8 mask
, __u8 byte
);
141 static int ti_download_firmware(struct ti_device
*tdev
);
146 /* module parameters */
147 static int closing_wait
= TI_DEFAULT_CLOSING_WAIT
;
148 static ushort vendor_3410
[TI_EXTRA_VID_PID_COUNT
];
149 static unsigned int vendor_3410_count
;
150 static ushort product_3410
[TI_EXTRA_VID_PID_COUNT
];
151 static unsigned int product_3410_count
;
152 static ushort vendor_5052
[TI_EXTRA_VID_PID_COUNT
];
153 static unsigned int vendor_5052_count
;
154 static ushort product_5052
[TI_EXTRA_VID_PID_COUNT
];
155 static unsigned int product_5052_count
;
157 /* supported devices */
158 /* the array dimension is the number of default entries plus */
159 /* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */
161 static struct usb_device_id ti_id_table_3410
[15+TI_EXTRA_VID_PID_COUNT
+1] = {
162 { USB_DEVICE(TI_VENDOR_ID
, TI_3410_PRODUCT_ID
) },
163 { USB_DEVICE(TI_VENDOR_ID
, TI_3410_EZ430_ID
) },
164 { USB_DEVICE(MTS_VENDOR_ID
, MTS_GSM_NO_FW_PRODUCT_ID
) },
165 { USB_DEVICE(MTS_VENDOR_ID
, MTS_CDMA_NO_FW_PRODUCT_ID
) },
166 { USB_DEVICE(MTS_VENDOR_ID
, MTS_CDMA_PRODUCT_ID
) },
167 { USB_DEVICE(MTS_VENDOR_ID
, MTS_GSM_PRODUCT_ID
) },
168 { USB_DEVICE(MTS_VENDOR_ID
, MTS_EDGE_PRODUCT_ID
) },
169 { USB_DEVICE(MTS_VENDOR_ID
, MTS_MT9234MU_PRODUCT_ID
) },
170 { USB_DEVICE(MTS_VENDOR_ID
, MTS_MT9234ZBA_PRODUCT_ID
) },
171 { USB_DEVICE(MTS_VENDOR_ID
, MTS_MT9234ZBAOLD_PRODUCT_ID
) },
172 { USB_DEVICE(IBM_VENDOR_ID
, IBM_4543_PRODUCT_ID
) },
173 { USB_DEVICE(IBM_VENDOR_ID
, IBM_454B_PRODUCT_ID
) },
174 { USB_DEVICE(IBM_VENDOR_ID
, IBM_454C_PRODUCT_ID
) },
175 { USB_DEVICE(ABBOTT_VENDOR_ID
, ABBOTT_PRODUCT_ID
) },
176 { USB_DEVICE(TI_VENDOR_ID
, FRI2_PRODUCT_ID
) },
179 static struct usb_device_id ti_id_table_5052
[5+TI_EXTRA_VID_PID_COUNT
+1] = {
180 { USB_DEVICE(TI_VENDOR_ID
, TI_5052_BOOT_PRODUCT_ID
) },
181 { USB_DEVICE(TI_VENDOR_ID
, TI_5152_BOOT_PRODUCT_ID
) },
182 { USB_DEVICE(TI_VENDOR_ID
, TI_5052_EEPROM_PRODUCT_ID
) },
183 { USB_DEVICE(TI_VENDOR_ID
, TI_5052_FIRMWARE_PRODUCT_ID
) },
186 static struct usb_device_id ti_id_table_combined
[19+2*TI_EXTRA_VID_PID_COUNT
+1] = {
187 { USB_DEVICE(TI_VENDOR_ID
, TI_3410_PRODUCT_ID
) },
188 { USB_DEVICE(TI_VENDOR_ID
, TI_3410_EZ430_ID
) },
189 { USB_DEVICE(MTS_VENDOR_ID
, MTS_GSM_NO_FW_PRODUCT_ID
) },
190 { USB_DEVICE(MTS_VENDOR_ID
, MTS_CDMA_NO_FW_PRODUCT_ID
) },
191 { USB_DEVICE(MTS_VENDOR_ID
, MTS_CDMA_PRODUCT_ID
) },
192 { USB_DEVICE(MTS_VENDOR_ID
, MTS_GSM_PRODUCT_ID
) },
193 { USB_DEVICE(MTS_VENDOR_ID
, MTS_EDGE_PRODUCT_ID
) },
194 { USB_DEVICE(MTS_VENDOR_ID
, MTS_MT9234MU_PRODUCT_ID
) },
195 { USB_DEVICE(MTS_VENDOR_ID
, MTS_MT9234ZBA_PRODUCT_ID
) },
196 { USB_DEVICE(MTS_VENDOR_ID
, MTS_MT9234ZBAOLD_PRODUCT_ID
) },
197 { USB_DEVICE(TI_VENDOR_ID
, TI_5052_BOOT_PRODUCT_ID
) },
198 { USB_DEVICE(TI_VENDOR_ID
, TI_5152_BOOT_PRODUCT_ID
) },
199 { USB_DEVICE(TI_VENDOR_ID
, TI_5052_EEPROM_PRODUCT_ID
) },
200 { USB_DEVICE(TI_VENDOR_ID
, TI_5052_FIRMWARE_PRODUCT_ID
) },
201 { USB_DEVICE(IBM_VENDOR_ID
, IBM_4543_PRODUCT_ID
) },
202 { USB_DEVICE(IBM_VENDOR_ID
, IBM_454B_PRODUCT_ID
) },
203 { USB_DEVICE(IBM_VENDOR_ID
, IBM_454C_PRODUCT_ID
) },
204 { USB_DEVICE(ABBOTT_VENDOR_ID
, ABBOTT_PRODUCT_ID
) },
205 { USB_DEVICE(TI_VENDOR_ID
, FRI2_PRODUCT_ID
) },
209 static struct usb_serial_driver ti_1port_device
= {
211 .owner
= THIS_MODULE
,
212 .name
= "ti_usb_3410_5052_1",
214 .description
= "TI USB 3410 1 port adapter",
215 .id_table
= ti_id_table_3410
,
217 .attach
= ti_startup
,
218 .release
= ti_release
,
219 .port_probe
= ti_port_probe
,
220 .port_remove
= ti_port_remove
,
224 .write_room
= ti_write_room
,
225 .chars_in_buffer
= ti_chars_in_buffer
,
226 .tx_empty
= ti_tx_empty
,
227 .throttle
= ti_throttle
,
228 .unthrottle
= ti_unthrottle
,
230 .set_termios
= ti_set_termios
,
231 .tiocmget
= ti_tiocmget
,
232 .tiocmset
= ti_tiocmset
,
233 .tiocmiwait
= usb_serial_generic_tiocmiwait
,
234 .get_icount
= usb_serial_generic_get_icount
,
235 .break_ctl
= ti_break
,
236 .read_int_callback
= ti_interrupt_callback
,
237 .read_bulk_callback
= ti_bulk_in_callback
,
238 .write_bulk_callback
= ti_bulk_out_callback
,
241 static struct usb_serial_driver ti_2port_device
= {
243 .owner
= THIS_MODULE
,
244 .name
= "ti_usb_3410_5052_2",
246 .description
= "TI USB 5052 2 port adapter",
247 .id_table
= ti_id_table_5052
,
249 .attach
= ti_startup
,
250 .release
= ti_release
,
251 .port_probe
= ti_port_probe
,
252 .port_remove
= ti_port_remove
,
256 .write_room
= ti_write_room
,
257 .chars_in_buffer
= ti_chars_in_buffer
,
258 .tx_empty
= ti_tx_empty
,
259 .throttle
= ti_throttle
,
260 .unthrottle
= ti_unthrottle
,
262 .set_termios
= ti_set_termios
,
263 .tiocmget
= ti_tiocmget
,
264 .tiocmset
= ti_tiocmset
,
265 .tiocmiwait
= usb_serial_generic_tiocmiwait
,
266 .get_icount
= usb_serial_generic_get_icount
,
267 .break_ctl
= ti_break
,
268 .read_int_callback
= ti_interrupt_callback
,
269 .read_bulk_callback
= ti_bulk_in_callback
,
270 .write_bulk_callback
= ti_bulk_out_callback
,
273 static struct usb_serial_driver
* const serial_drivers
[] = {
274 &ti_1port_device
, &ti_2port_device
, NULL
279 MODULE_AUTHOR(TI_DRIVER_AUTHOR
);
280 MODULE_DESCRIPTION(TI_DRIVER_DESC
);
281 MODULE_LICENSE("GPL");
283 MODULE_FIRMWARE("ti_3410.fw");
284 MODULE_FIRMWARE("ti_5052.fw");
285 MODULE_FIRMWARE("mts_cdma.fw");
286 MODULE_FIRMWARE("mts_gsm.fw");
287 MODULE_FIRMWARE("mts_edge.fw");
288 MODULE_FIRMWARE("mts_mt9234mu.fw");
289 MODULE_FIRMWARE("mts_mt9234zba.fw");
291 module_param(closing_wait
, int, S_IRUGO
| S_IWUSR
);
292 MODULE_PARM_DESC(closing_wait
,
293 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
295 module_param_array(vendor_3410
, ushort
, &vendor_3410_count
, S_IRUGO
);
296 MODULE_PARM_DESC(vendor_3410
,
297 "Vendor ids for 3410 based devices, 1-5 short integers");
298 module_param_array(product_3410
, ushort
, &product_3410_count
, S_IRUGO
);
299 MODULE_PARM_DESC(product_3410
,
300 "Product ids for 3410 based devices, 1-5 short integers");
301 module_param_array(vendor_5052
, ushort
, &vendor_5052_count
, S_IRUGO
);
302 MODULE_PARM_DESC(vendor_5052
,
303 "Vendor ids for 5052 based devices, 1-5 short integers");
304 module_param_array(product_5052
, ushort
, &product_5052_count
, S_IRUGO
);
305 MODULE_PARM_DESC(product_5052
,
306 "Product ids for 5052 based devices, 1-5 short integers");
308 MODULE_DEVICE_TABLE(usb
, ti_id_table_combined
);
313 static int __init
ti_init(void)
317 /* insert extra vendor and product ids */
318 c
= ARRAY_SIZE(ti_id_table_combined
) - 2 * TI_EXTRA_VID_PID_COUNT
- 1;
319 j
= ARRAY_SIZE(ti_id_table_3410
) - TI_EXTRA_VID_PID_COUNT
- 1;
320 for (i
= 0; i
< min(vendor_3410_count
, product_3410_count
); i
++, j
++, c
++) {
321 ti_id_table_3410
[j
].idVendor
= vendor_3410
[i
];
322 ti_id_table_3410
[j
].idProduct
= product_3410
[i
];
323 ti_id_table_3410
[j
].match_flags
= USB_DEVICE_ID_MATCH_DEVICE
;
324 ti_id_table_combined
[c
].idVendor
= vendor_3410
[i
];
325 ti_id_table_combined
[c
].idProduct
= product_3410
[i
];
326 ti_id_table_combined
[c
].match_flags
= USB_DEVICE_ID_MATCH_DEVICE
;
328 j
= ARRAY_SIZE(ti_id_table_5052
) - TI_EXTRA_VID_PID_COUNT
- 1;
329 for (i
= 0; i
< min(vendor_5052_count
, product_5052_count
); i
++, j
++, c
++) {
330 ti_id_table_5052
[j
].idVendor
= vendor_5052
[i
];
331 ti_id_table_5052
[j
].idProduct
= product_5052
[i
];
332 ti_id_table_5052
[j
].match_flags
= USB_DEVICE_ID_MATCH_DEVICE
;
333 ti_id_table_combined
[c
].idVendor
= vendor_5052
[i
];
334 ti_id_table_combined
[c
].idProduct
= product_5052
[i
];
335 ti_id_table_combined
[c
].match_flags
= USB_DEVICE_ID_MATCH_DEVICE
;
338 return usb_serial_register_drivers(serial_drivers
, KBUILD_MODNAME
, ti_id_table_combined
);
341 static void __exit
ti_exit(void)
343 usb_serial_deregister_drivers(serial_drivers
);
346 module_init(ti_init
);
347 module_exit(ti_exit
);
350 static int ti_startup(struct usb_serial
*serial
)
352 struct ti_device
*tdev
;
353 struct usb_device
*dev
= serial
->dev
;
357 "%s - product 0x%4X, num configurations %d, configuration value %d",
358 __func__
, le16_to_cpu(dev
->descriptor
.idProduct
),
359 dev
->descriptor
.bNumConfigurations
,
360 dev
->actconfig
->desc
.bConfigurationValue
);
362 /* create device structure */
363 tdev
= kzalloc(sizeof(struct ti_device
), GFP_KERNEL
);
365 dev_err(&dev
->dev
, "%s - out of memory\n", __func__
);
368 mutex_init(&tdev
->td_open_close_lock
);
369 tdev
->td_serial
= serial
;
370 usb_set_serial_data(serial
, tdev
);
372 /* determine device type */
373 if (usb_match_id(serial
->interface
, ti_id_table_3410
))
374 tdev
->td_is_3410
= 1;
375 dev_dbg(&dev
->dev
, "%s - device type is %s\n", __func__
,
376 tdev
->td_is_3410
? "3410" : "5052");
378 /* if we have only 1 configuration, download firmware */
379 if (dev
->descriptor
.bNumConfigurations
== 1) {
380 status
= ti_download_firmware(tdev
);
385 /* 3410 must be reset, 5052 resets itself */
386 if (tdev
->td_is_3410
) {
387 msleep_interruptible(100);
388 usb_reset_device(dev
);
395 /* the second configuration must be set */
396 if (dev
->actconfig
->desc
.bConfigurationValue
== TI_BOOT_CONFIG
) {
397 status
= usb_driver_set_configuration(dev
, TI_ACTIVE_CONFIG
);
398 status
= status
? status
: -ENODEV
;
406 usb_set_serial_data(serial
, NULL
);
411 static void ti_release(struct usb_serial
*serial
)
413 struct ti_device
*tdev
= usb_get_serial_data(serial
);
418 static int ti_port_probe(struct usb_serial_port
*port
)
420 struct ti_port
*tport
;
422 tport
= kzalloc(sizeof(*tport
), GFP_KERNEL
);
426 spin_lock_init(&tport
->tp_lock
);
427 if (port
== port
->serial
->port
[0])
428 tport
->tp_uart_base_addr
= TI_UART1_BASE_ADDR
;
430 tport
->tp_uart_base_addr
= TI_UART2_BASE_ADDR
;
431 port
->port
.closing_wait
= msecs_to_jiffies(10 * closing_wait
);
432 init_waitqueue_head(&tport
->tp_write_wait
);
433 if (kfifo_alloc(&tport
->write_fifo
, TI_WRITE_BUF_SIZE
, GFP_KERNEL
)) {
437 tport
->tp_port
= port
;
438 tport
->tp_tdev
= usb_get_serial_data(port
->serial
);
439 tport
->tp_uart_mode
= 0; /* default is RS232 */
441 usb_set_serial_port_data(port
, tport
);
446 static int ti_port_remove(struct usb_serial_port
*port
)
448 struct ti_port
*tport
;
450 tport
= usb_get_serial_port_data(port
);
451 kfifo_free(&tport
->write_fifo
);
457 static int ti_open(struct tty_struct
*tty
, struct usb_serial_port
*port
)
459 struct ti_port
*tport
= usb_get_serial_port_data(port
);
460 struct ti_device
*tdev
;
461 struct usb_device
*dev
;
465 __u16 open_settings
= (__u8
)(TI_PIPE_MODE_CONTINOUS
|
466 TI_PIPE_TIMEOUT_ENABLE
|
467 (TI_TRANSFER_TIMEOUT
<< 2));
472 dev
= port
->serial
->dev
;
473 tdev
= tport
->tp_tdev
;
475 /* only one open on any port on a device at a time */
476 if (mutex_lock_interruptible(&tdev
->td_open_close_lock
))
479 port_number
= port
->number
- port
->serial
->minor
;
482 tport
->tp_shadow_mcr
|= (TI_MCR_RTS
| TI_MCR_DTR
);
484 /* start interrupt urb the first time a port is opened on this device */
485 if (tdev
->td_open_port_count
== 0) {
486 dev_dbg(&port
->dev
, "%s - start interrupt in urb\n", __func__
);
487 urb
= tdev
->td_serial
->port
[0]->interrupt_in_urb
;
489 dev_err(&port
->dev
, "%s - no interrupt urb\n", __func__
);
494 status
= usb_submit_urb(urb
, GFP_KERNEL
);
496 dev_err(&port
->dev
, "%s - submit interrupt urb failed, %d\n", __func__
, status
);
502 ti_set_termios(tty
, port
, &tty
->termios
);
504 dev_dbg(&port
->dev
, "%s - sending TI_OPEN_PORT\n", __func__
);
505 status
= ti_command_out_sync(tdev
, TI_OPEN_PORT
,
506 (__u8
)(TI_UART1_PORT
+ port_number
), open_settings
, NULL
, 0);
508 dev_err(&port
->dev
, "%s - cannot send open command, %d\n",
513 dev_dbg(&port
->dev
, "%s - sending TI_START_PORT\n", __func__
);
514 status
= ti_command_out_sync(tdev
, TI_START_PORT
,
515 (__u8
)(TI_UART1_PORT
+ port_number
), 0, NULL
, 0);
517 dev_err(&port
->dev
, "%s - cannot send start command, %d\n",
522 dev_dbg(&port
->dev
, "%s - sending TI_PURGE_PORT\n", __func__
);
523 status
= ti_command_out_sync(tdev
, TI_PURGE_PORT
,
524 (__u8
)(TI_UART1_PORT
+ port_number
), TI_PURGE_INPUT
, NULL
, 0);
526 dev_err(&port
->dev
, "%s - cannot clear input buffers, %d\n",
530 status
= ti_command_out_sync(tdev
, TI_PURGE_PORT
,
531 (__u8
)(TI_UART1_PORT
+ port_number
), TI_PURGE_OUTPUT
, NULL
, 0);
533 dev_err(&port
->dev
, "%s - cannot clear output buffers, %d\n",
538 /* reset the data toggle on the bulk endpoints to work around bug in
539 * host controllers where things get out of sync some times */
540 usb_clear_halt(dev
, port
->write_urb
->pipe
);
541 usb_clear_halt(dev
, port
->read_urb
->pipe
);
544 ti_set_termios(tty
, port
, &tty
->termios
);
546 dev_dbg(&port
->dev
, "%s - sending TI_OPEN_PORT (2)\n", __func__
);
547 status
= ti_command_out_sync(tdev
, TI_OPEN_PORT
,
548 (__u8
)(TI_UART1_PORT
+ port_number
), open_settings
, NULL
, 0);
550 dev_err(&port
->dev
, "%s - cannot send open command (2), %d\n",
555 dev_dbg(&port
->dev
, "%s - sending TI_START_PORT (2)\n", __func__
);
556 status
= ti_command_out_sync(tdev
, TI_START_PORT
,
557 (__u8
)(TI_UART1_PORT
+ port_number
), 0, NULL
, 0);
559 dev_err(&port
->dev
, "%s - cannot send start command (2), %d\n",
565 dev_dbg(&port
->dev
, "%s - start read urb\n", __func__
);
566 urb
= port
->read_urb
;
568 dev_err(&port
->dev
, "%s - no read urb\n", __func__
);
572 tport
->tp_read_urb_state
= TI_READ_URB_RUNNING
;
573 urb
->context
= tport
;
574 status
= usb_submit_urb(urb
, GFP_KERNEL
);
576 dev_err(&port
->dev
, "%s - submit read urb failed, %d\n",
581 tport
->tp_is_open
= 1;
582 ++tdev
->td_open_port_count
;
584 port
->port
.drain_delay
= 3;
589 if (tdev
->td_open_port_count
== 0)
590 usb_kill_urb(port
->serial
->port
[0]->interrupt_in_urb
);
592 mutex_unlock(&tdev
->td_open_close_lock
);
593 dev_dbg(&port
->dev
, "%s - exit %d\n", __func__
, status
);
598 static void ti_close(struct usb_serial_port
*port
)
600 struct ti_device
*tdev
;
601 struct ti_port
*tport
;
607 tdev
= usb_get_serial_data(port
->serial
);
608 tport
= usb_get_serial_port_data(port
);
609 if (tdev
== NULL
|| tport
== NULL
)
612 tport
->tp_is_open
= 0;
614 usb_kill_urb(port
->read_urb
);
615 usb_kill_urb(port
->write_urb
);
616 tport
->tp_write_urb_in_use
= 0;
617 spin_lock_irqsave(&tport
->tp_lock
, flags
);
618 kfifo_reset_out(&tport
->write_fifo
);
619 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
621 port_number
= port
->number
- port
->serial
->minor
;
623 dev_dbg(&port
->dev
, "%s - sending TI_CLOSE_PORT\n", __func__
);
624 status
= ti_command_out_sync(tdev
, TI_CLOSE_PORT
,
625 (__u8
)(TI_UART1_PORT
+ port_number
), 0, NULL
, 0);
628 "%s - cannot send close port command, %d\n"
631 /* if mutex_lock is interrupted, continue anyway */
632 do_unlock
= !mutex_lock_interruptible(&tdev
->td_open_close_lock
);
633 --tport
->tp_tdev
->td_open_port_count
;
634 if (tport
->tp_tdev
->td_open_port_count
<= 0) {
635 /* last port is closed, shut down interrupt urb */
636 usb_kill_urb(port
->serial
->port
[0]->interrupt_in_urb
);
637 tport
->tp_tdev
->td_open_port_count
= 0;
640 mutex_unlock(&tdev
->td_open_close_lock
);
644 static int ti_write(struct tty_struct
*tty
, struct usb_serial_port
*port
,
645 const unsigned char *data
, int count
)
647 struct ti_port
*tport
= usb_get_serial_port_data(port
);
650 dev_dbg(&port
->dev
, "%s - write request of 0 bytes\n", __func__
);
654 if (tport
== NULL
|| !tport
->tp_is_open
)
657 count
= kfifo_in_locked(&tport
->write_fifo
, data
, count
,
665 static int ti_write_room(struct tty_struct
*tty
)
667 struct usb_serial_port
*port
= tty
->driver_data
;
668 struct ti_port
*tport
= usb_get_serial_port_data(port
);
675 spin_lock_irqsave(&tport
->tp_lock
, flags
);
676 room
= kfifo_avail(&tport
->write_fifo
);
677 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
679 dev_dbg(&port
->dev
, "%s - returns %d\n", __func__
, room
);
684 static int ti_chars_in_buffer(struct tty_struct
*tty
)
686 struct usb_serial_port
*port
= tty
->driver_data
;
687 struct ti_port
*tport
= usb_get_serial_port_data(port
);
694 spin_lock_irqsave(&tport
->tp_lock
, flags
);
695 chars
= kfifo_len(&tport
->write_fifo
);
696 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
698 dev_dbg(&port
->dev
, "%s - returns %d\n", __func__
, chars
);
702 static bool ti_tx_empty(struct usb_serial_port
*port
)
704 struct ti_port
*tport
= usb_get_serial_port_data(port
);
708 ret
= ti_get_lsr(tport
, &lsr
);
709 if (!ret
&& !(lsr
& TI_LSR_TX_EMPTY
))
715 static void ti_throttle(struct tty_struct
*tty
)
717 struct usb_serial_port
*port
= tty
->driver_data
;
718 struct ti_port
*tport
= usb_get_serial_port_data(port
);
723 if (I_IXOFF(tty
) || C_CRTSCTS(tty
))
724 ti_stop_read(tport
, tty
);
729 static void ti_unthrottle(struct tty_struct
*tty
)
731 struct usb_serial_port
*port
= tty
->driver_data
;
732 struct ti_port
*tport
= usb_get_serial_port_data(port
);
738 if (I_IXOFF(tty
) || C_CRTSCTS(tty
)) {
739 status
= ti_restart_read(tport
, tty
);
741 dev_err(&port
->dev
, "%s - cannot restart read, %d\n",
746 static int ti_ioctl(struct tty_struct
*tty
,
747 unsigned int cmd
, unsigned long arg
)
749 struct usb_serial_port
*port
= tty
->driver_data
;
750 struct ti_port
*tport
= usb_get_serial_port_data(port
);
752 dev_dbg(&port
->dev
, "%s - cmd = 0x%04X\n", __func__
, cmd
);
759 dev_dbg(&port
->dev
, "%s - TIOCGSERIAL\n", __func__
);
760 return ti_get_serial_info(tport
,
761 (struct serial_struct __user
*)arg
);
763 dev_dbg(&port
->dev
, "%s - TIOCSSERIAL\n", __func__
);
764 return ti_set_serial_info(tty
, tport
,
765 (struct serial_struct __user
*)arg
);
771 static void ti_set_termios(struct tty_struct
*tty
,
772 struct usb_serial_port
*port
, struct ktermios
*old_termios
)
774 struct ti_port
*tport
= usb_get_serial_port_data(port
);
775 struct ti_uart_config
*config
;
776 tcflag_t cflag
, iflag
;
779 int port_number
= port
->number
- port
->serial
->minor
;
782 cflag
= tty
->termios
.c_cflag
;
783 iflag
= tty
->termios
.c_iflag
;
785 dev_dbg(&port
->dev
, "%s - cflag %08x, iflag %08x\n", __func__
, cflag
, iflag
);
786 dev_dbg(&port
->dev
, "%s - old clfag %08x, old iflag %08x\n", __func__
,
787 old_termios
->c_cflag
, old_termios
->c_iflag
);
792 config
= kmalloc(sizeof(*config
), GFP_KERNEL
);
794 dev_err(&port
->dev
, "%s - out of memory\n", __func__
);
800 /* these flags must be set */
801 config
->wFlags
|= TI_UART_ENABLE_MS_INTS
;
802 config
->wFlags
|= TI_UART_ENABLE_AUTO_START_DMA
;
803 config
->bUartMode
= (__u8
)(tport
->tp_uart_mode
);
805 switch (cflag
& CSIZE
) {
807 config
->bDataBits
= TI_UART_5_DATA_BITS
;
810 config
->bDataBits
= TI_UART_6_DATA_BITS
;
813 config
->bDataBits
= TI_UART_7_DATA_BITS
;
817 config
->bDataBits
= TI_UART_8_DATA_BITS
;
821 /* CMSPAR isn't supported by this driver */
822 tty
->termios
.c_cflag
&= ~CMSPAR
;
824 if (cflag
& PARENB
) {
825 if (cflag
& PARODD
) {
826 config
->wFlags
|= TI_UART_ENABLE_PARITY_CHECKING
;
827 config
->bParity
= TI_UART_ODD_PARITY
;
829 config
->wFlags
|= TI_UART_ENABLE_PARITY_CHECKING
;
830 config
->bParity
= TI_UART_EVEN_PARITY
;
833 config
->wFlags
&= ~TI_UART_ENABLE_PARITY_CHECKING
;
834 config
->bParity
= TI_UART_NO_PARITY
;
838 config
->bStopBits
= TI_UART_2_STOP_BITS
;
840 config
->bStopBits
= TI_UART_1_STOP_BITS
;
842 if (cflag
& CRTSCTS
) {
843 /* RTS flow control must be off to drop RTS for baud rate B0 */
844 if ((cflag
& CBAUD
) != B0
)
845 config
->wFlags
|= TI_UART_ENABLE_RTS_IN
;
846 config
->wFlags
|= TI_UART_ENABLE_CTS_OUT
;
849 ti_restart_read(tport
, tty
);
852 if (I_IXOFF(tty
) || I_IXON(tty
)) {
853 config
->cXon
= START_CHAR(tty
);
854 config
->cXoff
= STOP_CHAR(tty
);
857 config
->wFlags
|= TI_UART_ENABLE_X_IN
;
859 ti_restart_read(tport
, tty
);
862 config
->wFlags
|= TI_UART_ENABLE_X_OUT
;
865 baud
= tty_get_baud_rate(tty
);
868 if (tport
->tp_tdev
->td_is_3410
)
869 config
->wBaudRate
= (__u16
)((923077 + baud
/2) / baud
);
871 config
->wBaudRate
= (__u16
)((461538 + baud
/2) / baud
);
873 /* FIXME: Should calculate resulting baud here and report it back */
874 if ((cflag
& CBAUD
) != B0
)
875 tty_encode_baud_rate(tty
, baud
, baud
);
878 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d",
879 __func__
, baud
, config
->wBaudRate
, config
->wFlags
,
880 config
->bDataBits
, config
->bParity
, config
->bStopBits
,
881 config
->cXon
, config
->cXoff
, config
->bUartMode
);
883 cpu_to_be16s(&config
->wBaudRate
);
884 cpu_to_be16s(&config
->wFlags
);
886 status
= ti_command_out_sync(tport
->tp_tdev
, TI_SET_CONFIG
,
887 (__u8
)(TI_UART1_PORT
+ port_number
), 0, (__u8
*)config
,
890 dev_err(&port
->dev
, "%s - cannot set config on port %d, %d\n",
891 __func__
, port_number
, status
);
893 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
894 mcr
= tport
->tp_shadow_mcr
;
895 /* if baud rate is B0, clear RTS and DTR */
896 if ((cflag
& CBAUD
) == B0
)
897 mcr
&= ~(TI_MCR_DTR
| TI_MCR_RTS
);
898 status
= ti_set_mcr(tport
, mcr
);
901 "%s - cannot set modem control on port %d, %d\n",
902 __func__
, port_number
, status
);
908 static int ti_tiocmget(struct tty_struct
*tty
)
910 struct usb_serial_port
*port
= tty
->driver_data
;
911 struct ti_port
*tport
= usb_get_serial_port_data(port
);
920 spin_lock_irqsave(&tport
->tp_lock
, flags
);
922 mcr
= tport
->tp_shadow_mcr
;
923 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
925 result
= ((mcr
& TI_MCR_DTR
) ? TIOCM_DTR
: 0)
926 | ((mcr
& TI_MCR_RTS
) ? TIOCM_RTS
: 0)
927 | ((mcr
& TI_MCR_LOOP
) ? TIOCM_LOOP
: 0)
928 | ((msr
& TI_MSR_CTS
) ? TIOCM_CTS
: 0)
929 | ((msr
& TI_MSR_CD
) ? TIOCM_CAR
: 0)
930 | ((msr
& TI_MSR_RI
) ? TIOCM_RI
: 0)
931 | ((msr
& TI_MSR_DSR
) ? TIOCM_DSR
: 0);
933 dev_dbg(&port
->dev
, "%s - 0x%04X\n", __func__
, result
);
939 static int ti_tiocmset(struct tty_struct
*tty
,
940 unsigned int set
, unsigned int clear
)
942 struct usb_serial_port
*port
= tty
->driver_data
;
943 struct ti_port
*tport
= usb_get_serial_port_data(port
);
950 spin_lock_irqsave(&tport
->tp_lock
, flags
);
951 mcr
= tport
->tp_shadow_mcr
;
957 if (set
& TIOCM_LOOP
)
960 if (clear
& TIOCM_RTS
)
962 if (clear
& TIOCM_DTR
)
964 if (clear
& TIOCM_LOOP
)
966 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
968 return ti_set_mcr(tport
, mcr
);
972 static void ti_break(struct tty_struct
*tty
, int break_state
)
974 struct usb_serial_port
*port
= tty
->driver_data
;
975 struct ti_port
*tport
= usb_get_serial_port_data(port
);
978 dev_dbg(&port
->dev
, "%s - state = %d\n", __func__
, break_state
);
983 status
= ti_write_byte(port
, tport
->tp_tdev
,
984 tport
->tp_uart_base_addr
+ TI_UART_OFFSET_LCR
,
985 TI_LCR_BREAK
, break_state
== -1 ? TI_LCR_BREAK
: 0);
988 dev_dbg(&port
->dev
, "%s - error setting break, %d\n", __func__
, status
);
992 static void ti_interrupt_callback(struct urb
*urb
)
994 struct ti_device
*tdev
= urb
->context
;
995 struct usb_serial_port
*port
;
996 struct usb_serial
*serial
= tdev
->td_serial
;
997 struct ti_port
*tport
;
998 struct device
*dev
= &urb
->dev
->dev
;
999 unsigned char *data
= urb
->transfer_buffer
;
1000 int length
= urb
->actual_length
;
1003 int status
= urb
->status
;
1013 dev_dbg(dev
, "%s - urb shutting down, %d\n", __func__
, status
);
1014 tdev
->td_urb_error
= 1;
1017 dev_err(dev
, "%s - nonzero urb status, %d\n", __func__
, status
);
1018 tdev
->td_urb_error
= 1;
1023 dev_dbg(dev
, "%s - bad packet size, %d\n", __func__
, length
);
1027 if (data
[0] == TI_CODE_HARDWARE_ERROR
) {
1028 dev_err(dev
, "%s - hardware error, %d\n", __func__
, data
[1]);
1032 port_number
= TI_GET_PORT_FROM_CODE(data
[0]);
1033 function
= TI_GET_FUNC_FROM_CODE(data
[0]);
1035 dev_dbg(dev
, "%s - port_number %d, function %d, data 0x%02X\n",
1036 __func__
, port_number
, function
, data
[1]);
1038 if (port_number
>= serial
->num_ports
) {
1039 dev_err(dev
, "%s - bad port number, %d\n",
1040 __func__
, port_number
);
1044 port
= serial
->port
[port_number
];
1046 tport
= usb_get_serial_port_data(port
);
1051 case TI_CODE_DATA_ERROR
:
1052 dev_err(dev
, "%s - DATA ERROR, port %d, data 0x%02X\n",
1053 __func__
, port_number
, data
[1]);
1056 case TI_CODE_MODEM_STATUS
:
1058 dev_dbg(dev
, "%s - port %d, msr 0x%02X\n", __func__
, port_number
, msr
);
1059 ti_handle_new_msr(tport
, msr
);
1063 dev_err(dev
, "%s - unknown interrupt code, 0x%02X\n",
1069 retval
= usb_submit_urb(urb
, GFP_ATOMIC
);
1071 dev_err(dev
, "%s - resubmit interrupt urb failed, %d\n",
1076 static void ti_bulk_in_callback(struct urb
*urb
)
1078 struct ti_port
*tport
= urb
->context
;
1079 struct usb_serial_port
*port
= tport
->tp_port
;
1080 struct device
*dev
= &urb
->dev
->dev
;
1081 int status
= urb
->status
;
1090 dev_dbg(dev
, "%s - urb shutting down, %d\n", __func__
, status
);
1091 tport
->tp_tdev
->td_urb_error
= 1;
1092 wake_up_interruptible(&tport
->tp_write_wait
);
1095 dev_err(dev
, "%s - nonzero urb status, %d\n",
1097 tport
->tp_tdev
->td_urb_error
= 1;
1098 wake_up_interruptible(&tport
->tp_write_wait
);
1101 if (status
== -EPIPE
)
1105 dev_err(dev
, "%s - stopping read!\n", __func__
);
1109 if (urb
->actual_length
) {
1110 usb_serial_debug_data(dev
, __func__
, urb
->actual_length
,
1111 urb
->transfer_buffer
);
1113 if (!tport
->tp_is_open
)
1114 dev_dbg(dev
, "%s - port closed, dropping data\n",
1117 ti_recv(port
, urb
->transfer_buffer
, urb
->actual_length
);
1118 spin_lock(&tport
->tp_lock
);
1119 port
->icount
.rx
+= urb
->actual_length
;
1120 spin_unlock(&tport
->tp_lock
);
1124 /* continue to read unless stopping */
1125 spin_lock(&tport
->tp_lock
);
1126 if (tport
->tp_read_urb_state
== TI_READ_URB_RUNNING
)
1127 retval
= usb_submit_urb(urb
, GFP_ATOMIC
);
1128 else if (tport
->tp_read_urb_state
== TI_READ_URB_STOPPING
)
1129 tport
->tp_read_urb_state
= TI_READ_URB_STOPPED
;
1131 spin_unlock(&tport
->tp_lock
);
1133 dev_err(dev
, "%s - resubmit read urb failed, %d\n",
1138 static void ti_bulk_out_callback(struct urb
*urb
)
1140 struct ti_port
*tport
= urb
->context
;
1141 struct usb_serial_port
*port
= tport
->tp_port
;
1142 int status
= urb
->status
;
1144 tport
->tp_write_urb_in_use
= 0;
1152 dev_dbg(&port
->dev
, "%s - urb shutting down, %d\n", __func__
, status
);
1153 tport
->tp_tdev
->td_urb_error
= 1;
1154 wake_up_interruptible(&tport
->tp_write_wait
);
1157 dev_err_console(port
, "%s - nonzero urb status, %d\n",
1159 tport
->tp_tdev
->td_urb_error
= 1;
1160 wake_up_interruptible(&tport
->tp_write_wait
);
1163 /* send any buffered data */
1168 static void ti_recv(struct usb_serial_port
*port
, unsigned char *data
,
1174 cnt
= tty_insert_flip_string(&port
->port
, data
, length
);
1176 dev_err(&port
->dev
, "%s - dropping data, %d bytes lost\n",
1177 __func__
, length
- cnt
);
1181 tty_flip_buffer_push(&port
->port
);
1184 } while (length
> 0);
1188 static void ti_send(struct ti_port
*tport
)
1191 struct usb_serial_port
*port
= tport
->tp_port
;
1192 unsigned long flags
;
1194 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1196 if (tport
->tp_write_urb_in_use
)
1199 count
= kfifo_out(&tport
->write_fifo
,
1200 port
->write_urb
->transfer_buffer
,
1201 port
->bulk_out_size
);
1206 tport
->tp_write_urb_in_use
= 1;
1208 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1210 usb_serial_debug_data(&port
->dev
, __func__
, count
,
1211 port
->write_urb
->transfer_buffer
);
1213 usb_fill_bulk_urb(port
->write_urb
, port
->serial
->dev
,
1214 usb_sndbulkpipe(port
->serial
->dev
,
1215 port
->bulk_out_endpointAddress
),
1216 port
->write_urb
->transfer_buffer
, count
,
1217 ti_bulk_out_callback
, tport
);
1219 result
= usb_submit_urb(port
->write_urb
, GFP_ATOMIC
);
1221 dev_err_console(port
, "%s - submit write urb failed, %d\n",
1223 tport
->tp_write_urb_in_use
= 0;
1224 /* TODO: reschedule ti_send */
1226 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1227 port
->icount
.tx
+= count
;
1228 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1231 /* more room in the buffer for new writes, wakeup */
1232 tty_port_tty_wakeup(&port
->port
);
1234 wake_up_interruptible(&tport
->tp_write_wait
);
1237 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1242 static int ti_set_mcr(struct ti_port
*tport
, unsigned int mcr
)
1244 unsigned long flags
;
1247 status
= ti_write_byte(tport
->tp_port
, tport
->tp_tdev
,
1248 tport
->tp_uart_base_addr
+ TI_UART_OFFSET_MCR
,
1249 TI_MCR_RTS
| TI_MCR_DTR
| TI_MCR_LOOP
, mcr
);
1251 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1253 tport
->tp_shadow_mcr
= mcr
;
1254 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1260 static int ti_get_lsr(struct ti_port
*tport
, u8
*lsr
)
1263 struct ti_device
*tdev
= tport
->tp_tdev
;
1264 struct usb_serial_port
*port
= tport
->tp_port
;
1265 int port_number
= port
->number
- port
->serial
->minor
;
1266 struct ti_port_status
*data
;
1268 size
= sizeof(struct ti_port_status
);
1269 data
= kmalloc(size
, GFP_KERNEL
);
1271 dev_err(&port
->dev
, "%s - out of memory\n", __func__
);
1275 status
= ti_command_in_sync(tdev
, TI_GET_PORT_STATUS
,
1276 (__u8
)(TI_UART1_PORT
+port_number
), 0, (__u8
*)data
, size
);
1279 "%s - get port status command failed, %d\n",
1284 dev_dbg(&port
->dev
, "%s - lsr 0x%02X\n", __func__
, data
->bLSR
);
1294 static int ti_get_serial_info(struct ti_port
*tport
,
1295 struct serial_struct __user
*ret_arg
)
1297 struct usb_serial_port
*port
= tport
->tp_port
;
1298 struct serial_struct ret_serial
;
1304 cwait
= port
->port
.closing_wait
;
1305 if (cwait
!= ASYNC_CLOSING_WAIT_NONE
)
1306 cwait
= jiffies_to_msecs(cwait
) / 10;
1308 memset(&ret_serial
, 0, sizeof(ret_serial
));
1310 ret_serial
.type
= PORT_16550A
;
1311 ret_serial
.line
= port
->serial
->minor
;
1312 ret_serial
.port
= port
->number
- port
->serial
->minor
;
1313 ret_serial
.flags
= tport
->tp_flags
;
1314 ret_serial
.xmit_fifo_size
= TI_WRITE_BUF_SIZE
;
1315 ret_serial
.baud_base
= tport
->tp_tdev
->td_is_3410
? 921600 : 460800;
1316 ret_serial
.closing_wait
= cwait
;
1318 if (copy_to_user(ret_arg
, &ret_serial
, sizeof(*ret_arg
)))
1325 static int ti_set_serial_info(struct tty_struct
*tty
, struct ti_port
*tport
,
1326 struct serial_struct __user
*new_arg
)
1328 struct serial_struct new_serial
;
1331 if (copy_from_user(&new_serial
, new_arg
, sizeof(new_serial
)))
1334 cwait
= new_serial
.closing_wait
;
1335 if (cwait
!= ASYNC_CLOSING_WAIT_NONE
)
1336 cwait
= msecs_to_jiffies(10 * new_serial
.closing_wait
);
1338 tport
->tp_flags
= new_serial
.flags
& TI_SET_SERIAL_FLAGS
;
1339 tport
->tp_port
->port
.closing_wait
= cwait
;
1345 static void ti_handle_new_msr(struct ti_port
*tport
, __u8 msr
)
1347 struct async_icount
*icount
;
1348 struct tty_struct
*tty
;
1349 unsigned long flags
;
1351 dev_dbg(&tport
->tp_port
->dev
, "%s - msr 0x%02X\n", __func__
, msr
);
1353 if (msr
& TI_MSR_DELTA_MASK
) {
1354 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1355 icount
= &tport
->tp_port
->icount
;
1356 if (msr
& TI_MSR_DELTA_CTS
)
1358 if (msr
& TI_MSR_DELTA_DSR
)
1360 if (msr
& TI_MSR_DELTA_CD
)
1362 if (msr
& TI_MSR_DELTA_RI
)
1364 wake_up_interruptible(&tport
->tp_port
->port
.delta_msr_wait
);
1365 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1368 tport
->tp_msr
= msr
& TI_MSR_MASK
;
1370 /* handle CTS flow control */
1371 tty
= tty_port_tty_get(&tport
->tp_port
->port
);
1372 if (tty
&& C_CRTSCTS(tty
)) {
1373 if (msr
& TI_MSR_CTS
) {
1374 tty
->hw_stopped
= 0;
1377 tty
->hw_stopped
= 1;
1384 static void ti_stop_read(struct ti_port
*tport
, struct tty_struct
*tty
)
1386 unsigned long flags
;
1388 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1390 if (tport
->tp_read_urb_state
== TI_READ_URB_RUNNING
)
1391 tport
->tp_read_urb_state
= TI_READ_URB_STOPPING
;
1393 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1397 static int ti_restart_read(struct ti_port
*tport
, struct tty_struct
*tty
)
1401 unsigned long flags
;
1403 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1405 if (tport
->tp_read_urb_state
== TI_READ_URB_STOPPED
) {
1406 tport
->tp_read_urb_state
= TI_READ_URB_RUNNING
;
1407 urb
= tport
->tp_port
->read_urb
;
1408 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1409 urb
->context
= tport
;
1410 status
= usb_submit_urb(urb
, GFP_KERNEL
);
1412 tport
->tp_read_urb_state
= TI_READ_URB_RUNNING
;
1413 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1420 static int ti_command_out_sync(struct ti_device
*tdev
, __u8 command
,
1421 __u16 moduleid
, __u16 value
, __u8
*data
, int size
)
1425 status
= usb_control_msg(tdev
->td_serial
->dev
,
1426 usb_sndctrlpipe(tdev
->td_serial
->dev
, 0), command
,
1427 (USB_TYPE_VENDOR
| USB_RECIP_DEVICE
| USB_DIR_OUT
),
1428 value
, moduleid
, data
, size
, 1000);
1440 static int ti_command_in_sync(struct ti_device
*tdev
, __u8 command
,
1441 __u16 moduleid
, __u16 value
, __u8
*data
, int size
)
1445 status
= usb_control_msg(tdev
->td_serial
->dev
,
1446 usb_rcvctrlpipe(tdev
->td_serial
->dev
, 0), command
,
1447 (USB_TYPE_VENDOR
| USB_RECIP_DEVICE
| USB_DIR_IN
),
1448 value
, moduleid
, data
, size
, 1000);
1460 static int ti_write_byte(struct usb_serial_port
*port
,
1461 struct ti_device
*tdev
, unsigned long addr
,
1462 __u8 mask
, __u8 byte
)
1466 struct ti_write_data_bytes
*data
;
1468 dev_dbg(&port
->dev
, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__
,
1471 size
= sizeof(struct ti_write_data_bytes
) + 2;
1472 data
= kmalloc(size
, GFP_KERNEL
);
1474 dev_err(&port
->dev
, "%s - out of memory\n", __func__
);
1478 data
->bAddrType
= TI_RW_DATA_ADDR_XDATA
;
1479 data
->bDataType
= TI_RW_DATA_BYTE
;
1480 data
->bDataCounter
= 1;
1481 data
->wBaseAddrHi
= cpu_to_be16(addr
>>16);
1482 data
->wBaseAddrLo
= cpu_to_be16(addr
);
1483 data
->bData
[0] = mask
;
1484 data
->bData
[1] = byte
;
1486 status
= ti_command_out_sync(tdev
, TI_WRITE_DATA
, TI_RAM_PORT
, 0,
1487 (__u8
*)data
, size
);
1490 dev_err(&port
->dev
, "%s - failed, %d\n", __func__
, status
);
1497 static int ti_do_download(struct usb_device
*dev
, int pipe
,
1498 u8
*buffer
, int size
)
1503 struct ti_firmware_header
*header
;
1507 for (pos
= sizeof(struct ti_firmware_header
); pos
< size
; pos
++)
1508 cs
= (__u8
)(cs
+ buffer
[pos
]);
1510 header
= (struct ti_firmware_header
*)buffer
;
1511 header
->wLength
= cpu_to_le16((__u16
)(size
1512 - sizeof(struct ti_firmware_header
)));
1513 header
->bCheckSum
= cs
;
1515 dev_dbg(&dev
->dev
, "%s - downloading firmware\n", __func__
);
1516 for (pos
= 0; pos
< size
; pos
+= done
) {
1517 len
= min(size
- pos
, TI_DOWNLOAD_MAX_PACKET_SIZE
);
1518 status
= usb_bulk_msg(dev
, pipe
, buffer
+ pos
, len
,
1526 static int ti_download_firmware(struct ti_device
*tdev
)
1531 struct usb_device
*dev
= tdev
->td_serial
->dev
;
1532 unsigned int pipe
= usb_sndbulkpipe(dev
,
1533 tdev
->td_serial
->port
[0]->bulk_out_endpointAddress
);
1534 const struct firmware
*fw_p
;
1537 /* try ID specific firmware first, then try generic firmware */
1538 sprintf(buf
, "ti_usb-v%04x-p%04x.fw", dev
->descriptor
.idVendor
,
1539 dev
->descriptor
.idProduct
);
1540 status
= request_firmware(&fw_p
, buf
, &dev
->dev
);
1544 if (dev
->descriptor
.idVendor
== MTS_VENDOR_ID
) {
1545 switch (dev
->descriptor
.idProduct
) {
1546 case MTS_CDMA_PRODUCT_ID
:
1547 strcpy(buf
, "mts_cdma.fw");
1549 case MTS_GSM_PRODUCT_ID
:
1550 strcpy(buf
, "mts_gsm.fw");
1552 case MTS_EDGE_PRODUCT_ID
:
1553 strcpy(buf
, "mts_edge.fw");
1555 case MTS_MT9234MU_PRODUCT_ID
:
1556 strcpy(buf
, "mts_mt9234mu.fw");
1558 case MTS_MT9234ZBA_PRODUCT_ID
:
1559 strcpy(buf
, "mts_mt9234zba.fw");
1561 case MTS_MT9234ZBAOLD_PRODUCT_ID
:
1562 strcpy(buf
, "mts_mt9234zba.fw");
1565 if (buf
[0] == '\0') {
1566 if (tdev
->td_is_3410
)
1567 strcpy(buf
, "ti_3410.fw");
1569 strcpy(buf
, "ti_5052.fw");
1571 status
= request_firmware(&fw_p
, buf
, &dev
->dev
);
1574 dev_err(&dev
->dev
, "%s - firmware not found\n", __func__
);
1577 if (fw_p
->size
> TI_FIRMWARE_BUF_SIZE
) {
1578 dev_err(&dev
->dev
, "%s - firmware too large %zu\n", __func__
, fw_p
->size
);
1579 release_firmware(fw_p
);
1583 buffer_size
= TI_FIRMWARE_BUF_SIZE
+ sizeof(struct ti_firmware_header
);
1584 buffer
= kmalloc(buffer_size
, GFP_KERNEL
);
1586 memcpy(buffer
, fw_p
->data
, fw_p
->size
);
1587 memset(buffer
+ fw_p
->size
, 0xff, buffer_size
- fw_p
->size
);
1588 status
= ti_do_download(dev
, pipe
, buffer
, fw_p
->size
);
1591 dev_dbg(&dev
->dev
, "%s ENOMEM\n", __func__
);
1594 release_firmware(fw_p
);
1596 dev_err(&dev
->dev
, "%s - error downloading firmware, %d\n",
1601 dev_dbg(&dev
->dev
, "%s - download successful\n", __func__
);